How would a rock's weight on the Moon or the Sun compare to its weight on Earth? Assume that the rock would not burn up. OA. It would weigh less on the Moon and on the Sun
OB. It would weigh less on the Moon and more on the Sun
OC. It would weigh more on the Moon and on the Sun
OD. It would weigh more on the Moon and loss on the Sun

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.